测量膝关节关节空间宽度的准确方法,尽管光束投射角度的变化
Sung Eun Kim1, Keehyun Kim1, Myung Chul Lee1
1Department of Orthopaedic Surgery, Seoul National University Hospital, Seoul, South Korea; Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul, South Korea.
The Knee
|November 5, 2023
概括
使用关节空间宽度 (JSW) 进行准确的膝关节关节炎 (OA) 评估是具有挑战性的. 使用CT扫描和X射线的新平均距离 (AVD) 方法显示,从X射线束角度变化中减少了测量误差.
科学领域:
- 放射学 放射学是一门学科.
- 整形外科 整形外科 整形外科
- 医疗成像医学成像
背景情况:
- 通过关节空间宽度 (JSW) 来评估膝关节关节炎 (OA) 严重程度,受到解剖学变异,X射线射线投影角度 (BPA) 错误和患者姿势的阻碍.
- 目前的方法缺乏准确的JSW测量共识参考点,需要改进的评估技术.
研究的目的:
- 建立精确可靠的测量膝关节空间宽度 (JSW) 方法,最大限度地减少因X射线束投射角度 (BPA) 的变化引起的错误.
主要方法:
- 使用计算机断层扫描 (CT) 来进行模拟研究,对30个膝盖进行了先进的OA的数字放射.
- 关节空间宽度 (JSW) 测量是使用中间大腿和中间小腿平原的前/后边界 (DAB,DPB) 和它们的平均值 (AVD) 之间的距离.
- 对于JSW测量的DAB,DPB和AVD的可靠性在100个膝盖中使用中性,5°尾部和5°头部倾斜BPAs的前后X射线进行了评估.
主要成果:
- 在模拟中,AVD方法显示了5°和10°尾部倾斜和5°头部倾斜的0°BPA低于1mm的差异.
- DAB和 DPB的测量显示出与0°BPA在各种角度的显著差异 (>1毫米) (所有P<0.001).
- 与DAB和DPB方法相比,在概念验证研究中考虑BPA变化时,AVD测量显示了JSW测量的最小差异.
结论:
- 平均距离 (AVD) 方法提供了一种简单而准确的方法,用于测量膝关节骨关节炎 (OA) 评估中的关节空间宽度 (JSW).
- 这种方法即使在X射线以意想不到的角度获得时也有效,为改善临床实践提供了潜在的潜力.
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